US20120258840A1 - Fitness device - Google Patents
Fitness device Download PDFInfo
- Publication number
- US20120258840A1 US20120258840A1 US13/510,332 US201013510332A US2012258840A1 US 20120258840 A1 US20120258840 A1 US 20120258840A1 US 201013510332 A US201013510332 A US 201013510332A US 2012258840 A1 US2012258840 A1 US 2012258840A1
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- US
- United States
- Prior art keywords
- fitness device
- frame
- disposed
- damping
- steering
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Classifications
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B22/00—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements
- A63B22/0002—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements involving an exercising of arms
- A63B22/001—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements involving an exercising of arms by simultaneously exercising arms and legs, e.g. diagonally in anti-phase
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B22/00—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements
- A63B22/06—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements with support elements performing a rotating cycling movement, i.e. a closed path movement
- A63B22/0664—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements with support elements performing a rotating cycling movement, i.e. a closed path movement performing an elliptic movement
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B22/00—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements
- A63B22/20—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements using rollers, wheels, castors or the like, e.g. gliding means, to be moved over the floor or other surface, e.g. guide tracks, during exercising
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B23/00—Exercising apparatus specially adapted for particular parts of the body
- A63B23/035—Exercising apparatus specially adapted for particular parts of the body for limbs, i.e. upper or lower limbs, e.g. simultaneously
- A63B23/03575—Apparatus used for exercising upper and lower limbs simultaneously
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
- B62K5/00—Cycles with handlebars, equipped with three or more main road wheels
- B62K5/02—Tricycles
- B62K5/05—Tricycles characterised by a single rear wheel
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
- B62K5/00—Cycles with handlebars, equipped with three or more main road wheels
- B62K5/08—Cycles with handlebars, equipped with three or more main road wheels with steering devices acting on two or more wheels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
- B62K5/00—Cycles with handlebars, equipped with three or more main road wheels
- B62K5/10—Cycles with handlebars, equipped with three or more main road wheels with means for inwardly inclining the vehicle body on bends
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
- B62M1/00—Rider propulsion of wheeled vehicles
- B62M1/12—Rider propulsion of wheeled vehicles operated by both hand and foot power
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
- B62M1/00—Rider propulsion of wheeled vehicles
- B62M1/24—Rider propulsion of wheeled vehicles with reciprocating levers, e.g. foot levers
- B62M1/26—Rider propulsion of wheeled vehicles with reciprocating levers, e.g. foot levers characterised by rotary cranks combined with reciprocating levers
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B22/00—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements
- A63B22/06—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements with support elements performing a rotating cycling movement, i.e. a closed path movement
- A63B22/0664—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements with support elements performing a rotating cycling movement, i.e. a closed path movement performing an elliptic movement
- A63B2022/067—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements with support elements performing a rotating cycling movement, i.e. a closed path movement performing an elliptic movement with crank and handles being on opposite sides of the exercising apparatus with respect to the frontal body-plane of the user, e.g. the crank is behind and handles are in front of the user
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B2208/00—Characteristics or parameters related to the user or player
- A63B2208/02—Characteristics or parameters related to the user or player posture
- A63B2208/0204—Standing on the feet
Definitions
- the invention relates to a mobile fitness device comprising a frame on which two front wheels and a rear wheel are disposed. Furthermore, the invention relates to a steering assembly of such a fitness device.
- crosstrainers or elliptical trainers are known from the prior art. Due to the simultaneous use of arms and legs, training devices of that type simulate an ergonomic walking movement similar to the sequence of movements of Nordic walking. A flywheel, which has a changing resistance because of a brake device, for example, is driven to rotate by the sequence of movements in stationary crosstrainers. Because stationary training devices must have a high degree of stability, they have a large own weight. Thus, transporting such crosstrainers is difficult. For that reason, crosstrainers are configured for training in enclosed spaces.
- a training device that can be operated with the arms and legs similar to a crosstrainer is apparent from DE 203 19 128 U1.
- the training device is configured as a vehicle.
- Steering generally takes place by means of movable, preferably rotatable or pivotable handles that drive the steering via a steering system, for example via Bowden cables.
- mobile crosstrainers are known that can be steered by means of a tilting steering mechanism. These are disadvantageous in that a tilting movement is brought about very easily, which leads to an unstable driving behavior.
- the invention provides a mobile fitness device in which the mobile use or driving behavior is improved over the known mobile fitness devices.
- the mobile fitness device substantially comprises the following features:
- the error-free steering enabled by the steering assembly is particularly advantageous.
- a weight shift causes the frame to tilt, whereby the steering assembly is moved in such a way that a steering movement of at least the front wheels in the direction of the weight shift takes place.
- the training device has two driving mechanisms comprising two hinged arm drive rods and leg drive rods.
- the arm drive rods are configured in such a way that they can be grasped with the hands and a driving movement is generated by the movement of the arms and/or the upper body.
- the leg drive rods are configured in such a way that a user of the fitness device is able to stand on them and applies a force on the drive by moving the legs.
- the leg drive rods comprise treads for the feet of the user, but pedals are also conceivable.
- the drive is subjected to a load and driven by a preferably smooth and ergonomic sequence of movements of the arms and legs. Furthermore, it has proved to be particularly gentle on the joints to carry out circular movements, as are demanded by the proposed fitness device.
- the distance of the treads from one another is selected in such a way that a particularly ergonomic sequence of movements is ensured.
- the clear distance of the treads is no greater than 30 centimeters.
- a distance of the treads and/or an angle of the longitudinal axes of the treads can be adjusted relative to one another.
- the driving mechanisms are disposed on a frame which, for example, comprises longitudinal tubes which in turn are connected to two front wheels and a rear wheel.
- the two front wheels are preferably interconnected by a front axle.
- wheel suspensions which are preferably configured to be movable, are disposed on the front axle.
- the front axle is hinged to the frame.
- the frame which, for example in the case of straight driving, is vertical to the front axle, can be tilted out of the vertical plane in this manner.
- the frame is located in a vertical plane.
- the vertical plane extends along the longitudinal axis of the frame.
- the force vector of gravitation is in the vertical plane.
- a horizontal plane defined by the contact points of the wheels is disposed perpendicular to the vertical plane.
- the front axle is preferably disposed in a horizontal plane.
- a steering movement of the front wheels is enforced by means of the steering assembly by tilting the frame.
- the present invention comprises a tilting and/or steering damping system formed by damping elements which is disposed between the front wheels and the frame.
- Pendulum movements which are in particular triggered by a movement of the user's upper body, can be effectively dampened by means of the tilting damping system.
- an additional damping element is disposed in a joint suspension disposed between the frame and the front axle. It is possible to provide a damping element only on one front wheel; as a rule, however, both front wheels are dampened by one damping element respectively.
- one side of the damping elements is respectively disposed on one wheel suspension.
- one side of a damping element ends in the vicinity of a hub of the corresponding wheel.
- one side of the damping element is disposed in the vicinity of the wheel axle.
- a distance to the wheel axle or the imaginary extension thereof is no greater than 10 centimeters, preferably smaller than 5 centimeters.
- the distance to the wheel hub is no greater than 10 centimeters, preferably smaller than 5 centimeters.
- a transfer element is disposed between the wheel suspension and the damping element.
- the transfer element is preferably a rod or other rigid component disposed between the wheel suspension and one side of the damping element.
- a piston shock absorber is provided as a damping element, with the piston rod being disposed towards the wheel.
- the cylinder piston may also be disposed towards the wheel.
- At least one damping parameter of the damping elements is adjustable, preferably controllable.
- a compression stage and/or a rebound stage of the damper can be adjusted.
- a damper hardness can be adjusted.
- an adjustment of a damping parameter takes place via a bypass line.
- a cross section of an oil duct is variable.
- an adjustment takes place by means of at least one adjusting screw.
- the damping elements are replaceable.
- the damping action can be designed to be linear or progressive. For example, a progression behavior of the damper can be adjusted.
- the adjustment of at least one damping parameter offers the advantage that an adaptation of the driving behavior or steering behavior can be adjusted to a body weight of a user. Moreover, the damping behavior can be adjusted to a surface that is to be driven over. For example, a different damping behavior is required for smooth road surfacings than for uneven dirt roads.
- the damping elements comprise a tilting stop.
- a tilting stop is determined by a maximum penetration depth or a maximum extension of the respective damping element.
- an additional device is provided within or outside of the piston cylinder which causes a stop.
- the movement of the piston rod is limited by the tilting stop.
- the tilting stop is adjustable.
- the frame can be tilted by 5° to 20°, preferably by 10° to 15°, preferably 11° from the vertical plane extending along a longitudinal axis of the fitness device.
- the fitness device comprises a returning mechanism for returning the frame into the vertical plane.
- the damping element comprises a suitable spring member that supports a return into an upright position, i.e. into straight-line running.
- the returning element comprises a spring member.
- the spring member is a coil spring.
- the spring member is a leaf spring.
- the spring member is an air spring.
- the air spring damper offers the advantage that it has both damping properties as well as spring properties.
- the air spring damper acts as a returning element.
- the returning mechanism comprises several or a combination of spring members, for example a coil spring and an air spring.
- a, for example hydraulic, piston damper comprises a spring disposed in the piston cylinder as a returning element.
- the returning mechanism can be formed by various suitable devices; the above-mentioned examples are not supposed to limit the invention thereto.
- the tilting steering mechanism or the returning mechanism is configured in such a way that the tilt takes place about a pivot point which, if possible, is disposed above at least the horizontal section of the frame. In their lower position closest to the ground surface, the treads are also located below the pivot point. It is thus accomplished that the return of the frame into the vertical or upright position is supported by the mass below the pivot point. Due to the fact that the body weight acts via the treads below the pivot point, the driving behavior of the fitness device is steadier and more stable. The return into the upright position takes place in a smooth manner, which is advantageous especially in the case of fast driving or in tight turns.
- a particularly advantageous development comprises the integration of a gear shifting unit through which the transmission ratio of the drive can be adjusted. Similar to a bicycle, an adjustment to the terrain and/or the strength of the user as well as to the speed can be carried out.
- the frame of the fitness device comprises one or more preferably lockable folding mechanisms, for example for easy transport or storage of the fitness device.
- the folding mechanism preferably comprises a hinge, which for example is disposed in such a way that individual parts of the frame can be folded relative to one another in the plane of the frame.
- Several folding mechanisms or hinges can be provided in order to enable the fitness device to be folded together so as to save as much space as possible.
- the fitness device comprises a permanent brake by means of which the driving resistance can be adjusted.
- the intensity of the permanent brake is adjustable.
- the permanent brake increases training efficiency. It is particularly preferred that the permanent brake is detachably disposed on the fitness device.
- one embodiment provides that at least the rear wheel can be lifted by means of a stand so that the fitness trainer can be used stationarily.
- the stand on which the fitness device can be placed for stationary operation in one embodiment can thus be made substantially smaller and configured to save more space than, for example, a stationary bike trainer which as a rule requires a flywheel.
- the permanent brake is a hydrodynamic brake or an eddy current brake.
- an adjustment of at least one damping parameter of the first and/or second damping element is possible.
- an adjustment dependent on a selected gear, a speed and/or a body weight of a user is provided.
- the adjustment of the damping parameter can take place automatically.
- a body weight of a user is determined by means of a weighing mechanism and an adjustment of the damping parameter takes place automatically.
- the gear shifting unit is connected to the first and/or second damping element and the damping parameter of the first and/or second damping element is adapted automatically by actuating the gear shifting unit.
- the damping element is a piston damper with a maximum length of 240 millimeters to 260 millimeters.
- the piston damper has a stroke of 40 millimeters to 50 millimeters, preferably about 44 millimeters.
- the damper exerts a force of 2000 newtons at a piston rod movement of 350 millimeters per second. Depending or the requirements and the application, however, other dimensions are possible.
- the movement path, the frequency and the force that the damper exerts result depending on the piston damper length and the stroke.
- the mobile fitness device can not only be used as a bicycle-related means of transport, but also in a stationary manner.
- a so-called stationary bike trainer comprising braked support rollers can be used for stationary use. Both in stationary use as well as if the training device is used as a means of transport, the musculature of the legs and the upper body musculature are utilized and trained.
- FIG. 1 shows a fitness device
- FIG. 2 shows a detailed view of a fitness device
- FIG. 3 shows another detailed view of the fitness device
- FIG. 4 shows a schematic diagram of a tilting steering mechanism of a fitness device
- FIG. 5 shows a damping element
- FIG. 6 shows a detailed view of a steering assembly
- FIG. 1 shows a fitness device 1 in the form of a mobile crosstrainer with arm drive rods 2 and leg drive rods 3 disposed on both sides of a frame 4 .
- Treads 3 . 1 that enable a user to stand firmly when using the fitness device 1 are disposed on the leg drive rods 3 .
- the fitness device 1 has a rear wheel 5 and two front wheels 6 .
- the steering assembly 7 enforces a steering movement of the front wheels 6 suspended on the front axle 8 .
- the damping elements 9 disposed between the frame 4 and the front wheels 6 are can be clearly seen.
- the damping elements 9 are configured as piston dampers.
- FIG. 1 shows that the leg drive rods 3 are connected to a ring gear 10 , in the exemplary embodiment shown via a crank, in such a way that a moment generated by applying force to the leg drive rods 3 can be applied to the ring gear 10 .
- a moment is transferred to the rear wheel via a chain or belt not shown herein.
- the rear wheel hub 11 comprises a dynamo, which is not shown in more detail herein, preferably a hub dynamo.
- the rear wheel hub 11 comprises a permanent brake which can be additionally switched in as required. It is moreover preferred that the brake force of the permanent brake is adjustable.
- FIG. 2 shows a detailed view of the fitness device 1 , from which the arrangement of the treads 3 . 1 on the leg drive rod 3 , on the one hand, and the steering assembly 7 , on the one hand, can be seen in detail.
- the steering assembly 7 can be configured variably with regard to its form or design to match the requirements.
- Damping elements 9 that, with one side, are disposed on the frame 4 and, with the other side, on a wheel suspension 12 , on which the front wheels 6 are arranged in turn, are assigned to the steering assembly 7 .
- the damping elements 9 are disposed as closely as possible to the respective hub 13 of the front wheels.
- the embodiment shown in FIG. 2 comprises transfer elements 14 that keep a defined distance of one side of the damping elements 9 from the wheel hub 13 or the axis of rotation of the front wheels 6 —which is not shown in more detail for the sake of clarity.
- FIG. 3 shows another detailed view of the fitness device 1 .
- the hinged joint 15 between the arm drive rod 2 and the leg drive rod 3 can be seen clearly.
- a folding mechanism 16 which in particular is configured to be lockable, is apparent from FIG. 3 .
- the steering assembly 7 is actuated by tilting the frame 4 in relation to the front axle 6 .
- a joint 17 is disposed between the front axle 6 and the frame 4 , which in one version comprises another rotary damping element not shown in more detail herein.
- Track rods 18 are also shown which act on the front wheel suspension 12 if the frame 4 is tilted.
- FIG. 4 shows a schematic drawing of the fitness device 1 .
- the left-hand illustration shows the fitness device 1 in a resting position or during straight driving, and the right-hand drawing shows the fitness device 1 when driving towards the right.
- the frame 4 is in a vertical plane 19 that protrudes orthogonally from the plane of the image.
- the maximum possible tilting angles are marked with the reference numeral 20 ; they are preferably between 5° and 20°, preferably between 10° and 15°, particularly preferably about 11° in both directions.
- the damping elements 9 . 1 and 9 . 2 are in a center stroke position during straight driving. If the frame is tilted by the tilting angle 20 , the damping element 9 . 1 is completely extended, i.e. a piston rod, which is not marked in more detail herein, has a maximum stroke. Furthermore, a piston rod of the damping element 9 . 2 has a minimum stroke.
- the limitation of the stroke of the damping elements 9 . 1 and 9 . 2 in one embodiment acts as a tilting stop which limits a tilt of the frame 4 from the vertical plane 19 to a maximum tilting angle 20 .
- the pivot point of the tilting steering mechanism is disposed at a very low position; preferably, however, it can be provided as high as possible relative to the ground surface. This improves the return to the upright position about the pivot point.
- FIGS. 1-3 illustrate that a horizontal section of the frame 4 is disposed below the pivot point, i.e. the joint 17 (relative to the vertical).
- FIG. 5 shows a damping element 9 in different stroke positions.
- the damping element comprises a piston 22 with a piston rod 23 , which in one embodiment—in this case outlined by way of example in the left-hand illustration—comprises a thread 23 . 1 for attachment.
- the damping element 9 comprises an oil chamber 24 in which a damping piston 25 disposed on the piston rod 23 can be moved.
- a coil spring 26 which acts as a stop and returning element, is located in the oil chamber.
- An air chamber 28 which is separated from the oil chamber 24 by a movable partition wall 29 , provides for a progressive behavior of the damping element.
- FIG. 5 shows the damper piston, preferably during straight driving of the fitness device.
- the illustrations on the left and the right show maximum steering movements. It is apparent in particular from the right illustration that the coil spring 26 is biased in the case of a steering movement. If a force on the piston rod 23 is reduced, the coil spring 26 causes a return steering action into straight driving.
- FIG. 6 shows a detailed view of a steering assembly 7 .
- the steering assembly 7 comprises a track rod 18 , which, if the frame 4 is tilted, acts on a lever element 29 , which in turn is disposed on a steering element 30 .
- the steering element 30 is rotatably disposed in an accommodating portion 31 , with the accommodating portion 31 being disposed on the front axle 6 .
- the steering element 30 comprises the wheel suspension 12 on which the front wheel 6 is rotatably suspended.
- the damping element 9 is disposed between the front wheel suspension 12 and the frame 4 .
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- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Health & Medical Sciences (AREA)
- Physical Education & Sports Medicine (AREA)
- Vascular Medicine (AREA)
- Cardiology (AREA)
- Transportation (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Automatic Cycles, And Cycles In General (AREA)
- Vehicle Body Suspensions (AREA)
Abstract
The invention relates to a fitness device (1) that can be used in a mobile or stationary manner, comprising: a frame (4) on which two front wheels (6) and one rear wheel (5) are disposed, a drive device on each side of the frame (4), each made up of an arm drive rod (2) joined to a leg drive rod (3) by a hinge, wherein the leg drive rod (3) transfers a torque via a ring gear (10) and a chain to the rear wheel (5), a steering device (7) for steering the fitness device (1) in mobile use by means of tilting the frame (4), and a tilting/steering damper formed by damping elements (9) and disposed between the front wheels (6) and the frame (4).
Description
- The invention relates to a mobile fitness device comprising a frame on which two front wheels and a rear wheel are disposed. Furthermore, the invention relates to a steering assembly of such a fitness device.
- So-called crosstrainers or elliptical trainers are known from the prior art. Due to the simultaneous use of arms and legs, training devices of that type simulate an ergonomic walking movement similar to the sequence of movements of Nordic walking. A flywheel, which has a changing resistance because of a brake device, for example, is driven to rotate by the sequence of movements in stationary crosstrainers. Because stationary training devices must have a high degree of stability, they have a large own weight. Thus, transporting such crosstrainers is difficult. For that reason, crosstrainers are configured for training in enclosed spaces.
- Furthermore, a training device that can be operated with the arms and legs similar to a crosstrainer is apparent from DE 203 19 128 U1. Unlike stationary crosstrainers, the training device is configured as a vehicle. Steering generally takes place by means of movable, preferably rotatable or pivotable handles that drive the steering via a steering system, for example via Bowden cables. Steering systems are potentially subject to the risk that the two steering handles can be actuated in the respectively opposite direction, which neutralizes a steering movement.=>see A1. Furthermore, mobile crosstrainers are known that can be steered by means of a tilting steering mechanism. These are disadvantageous in that a tilting movement is brought about very easily, which leads to an unstable driving behavior.
- The invention provides a mobile fitness device in which the mobile use or driving behavior is improved over the known mobile fitness devices.
- Individual features of the inventive embodiments described herein are not limited thereto but may be combined with other features to constitute other embodiments.
- The mobile fitness device according to the invention substantially comprises the following features:
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- a frame on which two front wheels and a rear wheel are disposed,
- one driving mechanism, respectively, on both sides of the frame, each comprising an arm drive rod hinged to a leg drive rod, wherein the leg drive rods transfer a torque to the rear wheel via a gear unit,
- a steering assembly for steering the fitness device by tilting the frame,
- a tilting/steering damping system formed by damping elements which is disposed between the front wheels and the frame.
- The error-free steering enabled by the steering assembly is particularly advantageous. A weight shift causes the frame to tilt, whereby the steering assembly is moved in such a way that a steering movement of at least the front wheels in the direction of the weight shift takes place.
- The training device has two driving mechanisms comprising two hinged arm drive rods and leg drive rods. The arm drive rods are configured in such a way that they can be grasped with the hands and a driving movement is generated by the movement of the arms and/or the upper body. The leg drive rods are configured in such a way that a user of the fitness device is able to stand on them and applies a force on the drive by moving the legs. Preferably, the leg drive rods comprise treads for the feet of the user, but pedals are also conceivable. The drive is subjected to a load and driven by a preferably smooth and ergonomic sequence of movements of the arms and legs. Furthermore, it has proved to be particularly gentle on the joints to carry out circular movements, as are demanded by the proposed fitness device.
- Preferably, the distance of the treads from one another is selected in such a way that a particularly ergonomic sequence of movements is ensured. For example, the clear distance of the treads is no greater than 30 centimeters. In a preferred embodiment, a distance of the treads and/or an angle of the longitudinal axes of the treads can be adjusted relative to one another.
- The driving mechanisms are disposed on a frame which, for example, comprises longitudinal tubes which in turn are connected to two front wheels and a rear wheel. The two front wheels are preferably interconnected by a front axle. In another preferred embodiment, wheel suspensions, which are preferably configured to be movable, are disposed on the front axle. It is provided in another embodiment that the front axle is hinged to the frame. The frame, which, for example in the case of straight driving, is vertical to the front axle, can be tilted out of the vertical plane in this manner. In the case of straight driving or in an unloaded rest position of the fitness device, the frame is located in a vertical plane. The vertical plane extends along the longitudinal axis of the frame. Furthermore, the force vector of gravitation is in the vertical plane. Preferably, a horizontal plane defined by the contact points of the wheels is disposed perpendicular to the vertical plane. Moreover, the front axle is preferably disposed in a horizontal plane.
- A steering movement of the front wheels is enforced by means of the steering assembly by tilting the frame.
- Similar fitness devices are apparent from WO 2008/132191 A1 by the same applicant, to which reference is made in their entirety within the context of this disclosure.
- One difference to the fitness device proposed in WO 2008/132191 A1 is that the present invention comprises a tilting and/or steering damping system formed by damping elements which is disposed between the front wheels and the frame. Pendulum movements, which are in particular triggered by a movement of the user's upper body, can be effectively dampened by means of the tilting damping system. This increases stability in particular during straight driving, and thus the safety of the fitness device during mobile use. In an advantageous embodiment, it is provided that an additional damping element is disposed in a joint suspension disposed between the frame and the front axle. It is possible to provide a damping element only on one front wheel; as a rule, however, both front wheels are dampened by one damping element respectively.
- In one embodiment, it is provided that one side of the damping elements is respectively disposed on one wheel suspension. In particular, one side of a damping element ends in the vicinity of a hub of the corresponding wheel. Preferably, one side of the damping element is disposed in the vicinity of the wheel axle. This means that a distance to the wheel axle or the imaginary extension thereof is no greater than 10 centimeters, preferably smaller than 5 centimeters. Also, in one embodiment the distance to the wheel hub is no greater than 10 centimeters, preferably smaller than 5 centimeters. In another variation, it is provided that a transfer element is disposed between the wheel suspension and the damping element. The transfer element is preferably a rod or other rigid component disposed between the wheel suspension and one side of the damping element. In a particularly preferred embodiment, a piston shock absorber is provided as a damping element, with the piston rod being disposed towards the wheel. Alternatively, the cylinder piston may also be disposed towards the wheel.
- Another embodiment provides that at least one damping parameter of the damping elements is adjustable, preferably controllable. For example, a compression stage and/or a rebound stage of the damper can be adjusted. Preferably, a damper hardness can be adjusted. It is further preferred that an adjustment of a damping parameter takes place via a bypass line. Furthermore, it is provided in one variation that a cross section of an oil duct is variable. Preferably, an adjustment takes place by means of at least one adjusting screw. In one embodiment, it is also provided that the damping elements are replaceable. The damping action can be designed to be linear or progressive. For example, a progression behavior of the damper can be adjusted. The adjustment of at least one damping parameter offers the advantage that an adaptation of the driving behavior or steering behavior can be adjusted to a body weight of a user. Moreover, the damping behavior can be adjusted to a surface that is to be driven over. For example, a different damping behavior is required for smooth road surfacings than for uneven dirt roads.
- Another variation provides that the damping elements comprise a tilting stop. For example, a tilting stop is determined by a maximum penetration depth or a maximum extension of the respective damping element. It is also provided that an additional device is provided within or outside of the piston cylinder which causes a stop. Preferably, the movement of the piston rod is limited by the tilting stop. In a preferred variation, the tilting stop is adjustable. Furthermore, one embodiment provides that the frame can be tilted by 5° to 20°, preferably by 10° to 15°, preferably 11° from the vertical plane extending along a longitudinal axis of the fitness device.
- In another embodiment, the fitness device comprises a returning mechanism for returning the frame into the vertical plane. In particular, the damping element comprises a suitable spring member that supports a return into an upright position, i.e. into straight-line running. In one development, it is provided that the returning element comprises a spring member. In one configuration, the spring member is a coil spring. In another configuration, the spring member is a leaf spring. Particularly preferably, it is provided that the spring member is an air spring. The air spring damper offers the advantage that it has both damping properties as well as spring properties. In particular, the air spring damper acts as a returning element. In another embodiment, it is provided that the returning mechanism comprises several or a combination of spring members, for example a coil spring and an air spring. Preferably, a, for example hydraulic, piston damper comprises a spring disposed in the piston cylinder as a returning element. In principle, the returning mechanism can be formed by various suitable devices; the above-mentioned examples are not supposed to limit the invention thereto.
- In a particularly advantageous embodiment, the tilting steering mechanism or the returning mechanism is configured in such a way that the tilt takes place about a pivot point which, if possible, is disposed above at least the horizontal section of the frame. In their lower position closest to the ground surface, the treads are also located below the pivot point. It is thus accomplished that the return of the frame into the vertical or upright position is supported by the mass below the pivot point. Due to the fact that the body weight acts via the treads below the pivot point, the driving behavior of the fitness device is steadier and more stable. The return into the upright position takes place in a smooth manner, which is advantageous especially in the case of fast driving or in tight turns.
- A particularly advantageous development comprises the integration of a gear shifting unit through which the transmission ratio of the drive can be adjusted. Similar to a bicycle, an adjustment to the terrain and/or the strength of the user as well as to the speed can be carried out.
- The frame of the fitness device comprises one or more preferably lockable folding mechanisms, for example for easy transport or storage of the fitness device. The folding mechanism preferably comprises a hinge, which for example is disposed in such a way that individual parts of the frame can be folded relative to one another in the plane of the frame. Several folding mechanisms or hinges can be provided in order to enable the fitness device to be folded together so as to save as much space as possible.
- In another advantageous embodiment, the fitness device comprises a permanent brake by means of which the driving resistance can be adjusted. Preferably, the intensity of the permanent brake is adjustable. During mobile operation of the fitness device, the permanent brake increases training efficiency. It is particularly preferred that the permanent brake is detachably disposed on the fitness device.
- Furthermore, one embodiment provides that at least the rear wheel can be lifted by means of a stand so that the fitness trainer can be used stationarily. The stand on which the fitness device can be placed for stationary operation in one embodiment can thus be made substantially smaller and configured to save more space than, for example, a stationary bike trainer which as a rule requires a flywheel. In one embodiment, the permanent brake is a hydrodynamic brake or an eddy current brake.
- Preferably, an adjustment of at least one damping parameter of the first and/or second damping element is possible. For example, an adjustment dependent on a selected gear, a speed and/or a body weight of a user is provided. Preferably, the adjustment of the damping parameter can take place automatically. For example, it is provided in one embodiment that a body weight of a user is determined by means of a weighing mechanism and an adjustment of the damping parameter takes place automatically. It is provided in another embodiment that the gear shifting unit is connected to the first and/or second damping element and the damping parameter of the first and/or second damping element is adapted automatically by actuating the gear shifting unit.
- In one embodiment, the damping element is a piston damper with a maximum length of 240 millimeters to 260 millimeters. In one embodiment, the piston damper has a stroke of 40 millimeters to 50 millimeters, preferably about 44 millimeters. Moreover, one variation provides that the damper exerts a force of 2000 newtons at a piston rod movement of 350 millimeters per second. Depending or the requirements and the application, however, other dimensions are possible. The movement path, the frequency and the force that the damper exerts result depending on the piston damper length and the stroke.
- The mobile fitness device can not only be used as a bicycle-related means of transport, but also in a stationary manner. A so-called stationary bike trainer comprising braked support rollers can be used for stationary use. Both in stationary use as well as if the training device is used as a means of transport, the musculature of the legs and the upper body musculature are utilized and trained.
- Other advantageous embodiments become apparent from the following drawings. However, the developments depicted therein are not to be construed to be limiting; rather, the features described therein can be combined with one another and with the above-described features to constitute further embodiments. Furthermore, it should be noted that reference numerals indicated in the description of the Figures do not limit the scope of protection of the present invention, but merely refer to the exemplary embodiments shown in the Figures. Identical parts or parts that have the same function have the same reference numerals below. In the Figures:
-
FIG. 1 shows a fitness device; -
FIG. 2 shows a detailed view of a fitness device; -
FIG. 3 shows another detailed view of the fitness device; -
FIG. 4 shows a schematic diagram of a tilting steering mechanism of a fitness device; -
FIG. 5 shows a damping element; and -
FIG. 6 shows a detailed view of a steering assembly; -
FIG. 1 shows a fitness device 1 in the form of a mobile crosstrainer witharm drive rods 2 andleg drive rods 3 disposed on both sides of aframe 4. Treads 3.1 that enable a user to stand firmly when using the fitness device 1 are disposed on theleg drive rods 3. - In the embodiment shown, the fitness device 1 has a
rear wheel 5 and twofront wheels 6. Thesteering assembly 7 enforces a steering movement of thefront wheels 6 suspended on thefront axle 8. The dampingelements 9 disposed between theframe 4 and thefront wheels 6 are can be clearly seen. In the embodiment shown, the dampingelements 9 are configured as piston dampers. - Further,
FIG. 1 shows that theleg drive rods 3 are connected to aring gear 10, in the exemplary embodiment shown via a crank, in such a way that a moment generated by applying force to theleg drive rods 3 can be applied to thering gear 10. A moment is transferred to the rear wheel via a chain or belt not shown herein. In one embodiment, therear wheel hub 11 comprises a dynamo, which is not shown in more detail herein, preferably a hub dynamo. Moreover, it is provided in one embodiment that therear wheel hub 11 comprises a permanent brake which can be additionally switched in as required. It is moreover preferred that the brake force of the permanent brake is adjustable. -
FIG. 2 shows a detailed view of the fitness device 1, from which the arrangement of the treads 3.1 on theleg drive rod 3, on the one hand, and thesteering assembly 7, on the one hand, can be seen in detail. In principle, thesteering assembly 7 can be configured variably with regard to its form or design to match the requirements. - Damping
elements 9 that, with one side, are disposed on theframe 4 and, with the other side, on awheel suspension 12, on which thefront wheels 6 are arranged in turn, are assigned to thesteering assembly 7. In one embodiment, the dampingelements 9 are disposed as closely as possible to therespective hub 13 of the front wheels. The embodiment shown inFIG. 2 comprisestransfer elements 14 that keep a defined distance of one side of the dampingelements 9 from thewheel hub 13 or the axis of rotation of thefront wheels 6—which is not shown in more detail for the sake of clarity. -
FIG. 3 shows another detailed view of the fitness device 1. The hinged joint 15 between thearm drive rod 2 and theleg drive rod 3 can be seen clearly. Moreover, afolding mechanism 16, which in particular is configured to be lockable, is apparent fromFIG. 3 . - The
steering assembly 7 is actuated by tilting theframe 4 in relation to thefront axle 6. For this purpose, a joint 17 is disposed between thefront axle 6 and theframe 4, which in one version comprises another rotary damping element not shown in more detail herein.Track rods 18 are also shown which act on thefront wheel suspension 12 if theframe 4 is tilted. - In order to illustrate the mode of operation of the tilting steering mechanism,
FIG. 4 shows a schematic drawing of the fitness device 1. The left-hand illustration shows the fitness device 1 in a resting position or during straight driving, and the right-hand drawing shows the fitness device 1 when driving towards the right. - During straight driving, the
frame 4 is in avertical plane 19 that protrudes orthogonally from the plane of the image. The maximum possible tilting angles are marked with thereference numeral 20; they are preferably between 5° and 20°, preferably between 10° and 15°, particularly preferably about 11° in both directions. - It can be seen that the damping elements 9.1 and 9.2 are in a center stroke position during straight driving. If the frame is tilted by the tilting
angle 20, the damping element 9.1 is completely extended, i.e. a piston rod, which is not marked in more detail herein, has a maximum stroke. Furthermore, a piston rod of the damping element 9.2 has a minimum stroke. The limitation of the stroke of the damping elements 9.1 and 9.2 in one embodiment acts as a tilting stop which limits a tilt of theframe 4 from thevertical plane 19 to amaximum tilting angle 20. - In this illustration, the pivot point of the tilting steering mechanism is disposed at a very low position; preferably, however, it can be provided as high as possible relative to the ground surface. This improves the return to the upright position about the pivot point. In particular
FIGS. 1-3 illustrate that a horizontal section of theframe 4 is disposed below the pivot point, i.e. the joint 17 (relative to the vertical). -
FIG. 5 shows a dampingelement 9 in different stroke positions. The damping element comprises apiston 22 with apiston rod 23, which in one embodiment—in this case outlined by way of example in the left-hand illustration—comprises a thread 23.1 for attachment. Furthermore, the dampingelement 9 comprises anoil chamber 24 in which a dampingpiston 25 disposed on thepiston rod 23 can be moved. Furthermore, acoil spring 26, which acts as a stop and returning element, is located in the oil chamber. Anair chamber 28, which is separated from theoil chamber 24 by amovable partition wall 29, provides for a progressive behavior of the damping element. In the case of a rapid movement of the dampingpiston 25 in the direction of theair chamber 28, the gas in the air chamber, and thus the oil, is thus strongly pressurized and pressed through the openings in the piston rod, which are not shown in more detail herein. This can be seen in the left-hand illustration ofFIG. 5 . If the dampingpiston 25 moves quickly in the direction of the coil spring, a negative pressure is generated in theair chamber 28, which draws oil through the openings of the dampingpiston 25. This can be seen in the right-hand illustration ofFIG. 5 . In the case of a slow movement of the dampingpiston 25, hardly any pressure is exerted on theair chambers 28 so that the oil flows through the openings in the damping piston in a similar manner as in a hydraulic damper that is not configured to be progressive. - The center illustration of
FIG. 5 shows the damper piston, preferably during straight driving of the fitness device. The illustrations on the left and the right show maximum steering movements. It is apparent in particular from the right illustration that thecoil spring 26 is biased in the case of a steering movement. If a force on thepiston rod 23 is reduced, thecoil spring 26 causes a return steering action into straight driving. -
FIG. 6 shows a detailed view of asteering assembly 7. Thesteering assembly 7 comprises atrack rod 18, which, if theframe 4 is tilted, acts on alever element 29, which in turn is disposed on asteering element 30. Thesteering element 30 is rotatably disposed in anaccommodating portion 31, with theaccommodating portion 31 being disposed on thefront axle 6. Furthermore, thesteering element 30 comprises thewheel suspension 12 on which thefront wheel 6 is rotatably suspended. The dampingelement 9 is disposed between thefront wheel suspension 12 and theframe 4.
Claims (13)
1. Mobile fitness device, comprising:
a. a frame on which two front wheels and a rear wheel are disposed,
b. one driving mechanism, respectively, on both sides of the frame, each comprising an arm drive rod hinged to a leg drive rod, wherein the leg drive rods transfer a torque to the rear wheel via a ring gear and a chain,
c. a steering assembly for steering the fitness device by tilting the frame,
d. a tilting/steering damping system formed by damping elements which is disposed between the front wheels and the frame.
2. Mobile fitness device according to claim 1 , wherein one side of the damping elements is respectively disposed on one wheel suspension.
3. Mobile fitness device according to claim 1 , wherein a transfer element is disposed between the wheel suspension and the damping element.
4. Mobile fitness device according to claim 1 , wherein at least one damping parameter of the damping elements is adjustable.
5. Mobile fitness device according to claim 1 , wherein the damping elements comprise a tilting stop.
6. Mobile fitness device according to claim 5 , wherein the tilting stop is adjustable.
7. Mobile fitness device according to claim 1 , wherein the frame can be tilted by 5° to 20° from a vertical plane extending along a longitudinal axis of the fitness device.
8. Mobile fitness device according to claim 1 , wherein the fitness device comprises a returning mechanism for returning the frame into the vertical plane.
9. Mobile fitness device according to claim 8 , wherein the returning element comprises a spring member.
10. Mobile fitness device according to claim 1 , wherein the frame of the fitness device comprises a preferably lockable folding mechanism so that the frame can be folded together by means of the folding mechanism.
11. Mobile fitness device according to claim 1 , wherein the folding mechanism comprises a hinge.
12. Mobile fitness device according to claim 1 , further comprising a permanent brake by means of which the driving resistance can be adjusted.
13. Mobile fitness device according to claim 1 , wherein a horizontal section of the frame, relative to a vertical, is disposed below a joint of the tilting steering mechanism.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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DE102009053890.9 | 2009-11-20 | ||
DE102009053890 | 2009-11-20 | ||
PCT/EP2010/067410 WO2011061128A1 (en) | 2009-11-20 | 2010-11-12 | Fitness device |
Publications (1)
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US20120258840A1 true US20120258840A1 (en) | 2012-10-11 |
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ID=43528374
Family Applications (1)
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US13/510,332 Abandoned US20120258840A1 (en) | 2009-11-20 | 2010-11-12 | Fitness device |
Country Status (7)
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US (1) | US20120258840A1 (en) |
EP (1) | EP2501606B1 (en) |
AU (2) | AU2010321056A1 (en) |
CA (1) | CA2781464A1 (en) |
ES (1) | ES2464370T3 (en) |
PL (1) | PL2501606T3 (en) |
WO (1) | WO2011061128A1 (en) |
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US9409621B2 (en) * | 2014-12-31 | 2016-08-09 | Alexander Clark Hunt | Bicycle with coordinated pedal and upper body leverage |
US20170274237A1 (en) * | 2016-03-25 | 2017-09-28 | Chung-Fu Chang | Exercise machine having changeable damping mechanism |
US20190070457A1 (en) * | 2016-03-16 | 2019-03-07 | Robert Victor Howett | Exercise apparatus |
US11273883B2 (en) * | 2019-05-02 | 2022-03-15 | Hyundai Motor Company | Tilting structure of mobility device and mobility device including same |
US20220106011A1 (en) * | 2020-10-06 | 2022-04-07 | Columbia-Inland Corporation | Hybrid pump-action vehicle and therapy device |
US11364622B2 (en) * | 2015-12-24 | 2022-06-21 | Safran Electronics & Defense | Backpack support module for a modular exoskeleton structure |
US20220402569A1 (en) * | 2019-11-15 | 2022-12-22 | Piaggio & C. S.P.A. | Three-wheeled tilting vehicle |
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FR2986497B1 (en) * | 2012-02-07 | 2016-02-19 | Sigismond Spitzbarth | ROLLING TRAIN FOR MACHINE WITH CHASSIS PROVIDED WITH CENTRAL MAST, ELLIPTICAL PROPULSION DISPLACEMENT MACHINE |
ES2535206B1 (en) | 2012-12-21 | 2016-01-22 | Ramón MORETÓ VILAMAJÓ | Human propulsion vehicle with transmission mechanism operated by the feet |
CZ305353B6 (en) * | 2014-04-10 | 2015-08-12 | Comtes Fht A.S. | Gearing for oscillatory motion drive and vehicle with such a gearing |
PL232972B1 (en) * | 2017-08-25 | 2019-08-30 | () Twórca(Y) Wynalazku Marcin Grzeszczuk | Elliptic three-wheel vehicle |
DE102019103438A1 (en) | 2019-02-12 | 2020-08-13 | Werner Krammel | Vehicle with tilting frame and spring damper system |
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US20170274237A1 (en) * | 2016-03-25 | 2017-09-28 | Chung-Fu Chang | Exercise machine having changeable damping mechanism |
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US11273883B2 (en) * | 2019-05-02 | 2022-03-15 | Hyundai Motor Company | Tilting structure of mobility device and mobility device including same |
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US20220106011A1 (en) * | 2020-10-06 | 2022-04-07 | Columbia-Inland Corporation | Hybrid pump-action vehicle and therapy device |
Also Published As
Publication number | Publication date |
---|---|
WO2011061128A1 (en) | 2011-05-26 |
AU2010321056A1 (en) | 2012-06-07 |
EP2501606B1 (en) | 2014-01-08 |
AU2017200176B2 (en) | 2018-05-10 |
EP2501606A1 (en) | 2012-09-26 |
CA2781464A1 (en) | 2011-05-26 |
ES2464370T3 (en) | 2014-06-02 |
AU2017200176A1 (en) | 2017-02-02 |
PL2501606T3 (en) | 2014-09-30 |
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